To further explain, compared with nature, fish ponds are also a small ecological environment, and there are places where the weak eat the strong. Catfish populations grow rapidly, and fish in the same pond can vary in their growth. Therefore, timely screening of ponds is very important. Farmers can use fish nets to separate fish ponds, just like we usually use sieves to sieve objects of different sizes, use fish sieves of different specifications to sieve fish of different physiques, and let the weak fry keep the big ones. . to their fish.

After the fish fry are stocked, screening is carried out every 7-10 days, and the fast-growing and slow-growing fry are cultured in separate ponds to ensure the healthy growth of the catfish and the neat specifications of the ponds. In greenhouse farming, the nutrition of catfish is completely dependent on artificial feed, and the quality of feed and feeding are the key to achieving ideal yield.

Catfish are carnivorous omnivorous fish. Sexual gluttony, large food intake, daily food intake is 5% to 8% of body weight, and the maximum daily food intake can reach more than 15%. In the first month when the fry enter the pond, they are mainly fed with concentrated feed. The protein content in the feed is appropriately high. The feeding amount is 8-10% of the total weight of the fish, so that the fish can eat enough. The eel compound feed sold on the market is a good choice. You only need to add water to the eel feed and stir it evenly to feed. For 3-4 cm fry, feed them 3-4 times a day. The invention provides a catfish breeding method, which has the characteristics of rich nutrition, tender meat, more protein and fat.